diff --git a/.changeset/fast-mangos-tell.md b/.changeset/fast-mangos-tell.md
new file mode 100644
index 0000000000..bfcf429485
--- /dev/null
+++ b/.changeset/fast-mangos-tell.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-scaffolder-backend': minor
+---
+
+**BREAKING**: Updated `TemplateAction` and related types to have its type parameter extend `JsonObject` instead of `InputBase`. The `createTemplateAction` has also been updated to pass through the `TInput` type parameter to the return type, meaning the `TemplateAction` retains its type. This can lead to breakages during type checking especially within tests.
diff --git a/.changeset/witty-mails-search.md b/.changeset/witty-mails-search.md
new file mode 100644
index 0000000000..a98fc52884
--- /dev/null
+++ b/.changeset/witty-mails-search.md
@@ -0,0 +1,7 @@
+---
+'@backstage/plugin-scaffolder-backend-module-cookiecutter': minor
+'@backstage/plugin-scaffolder-backend-module-rails': minor
+'@backstage/plugin-scaffolder-backend-module-yeoman': minor
+---
+
+Updated to the latest version of `@backstage/plugin-scaffolder-backend`, meaning the `TemplateAction` now exposes the precise input type rather than `any`.
diff --git a/plugins/scaffolder-backend-module-cookiecutter/api-report.md b/plugins/scaffolder-backend-module-cookiecutter/api-report.md
index 132d3d4225..e55c6368c4 100644
--- a/plugins/scaffolder-backend-module-cookiecutter/api-report.md
+++ b/plugins/scaffolder-backend-module-cookiecutter/api-report.md
@@ -6,6 +6,7 @@
 /// <reference types="node" />
 
 import { ContainerRunner } from '@backstage/backend-common';
+import { JsonObject } from '@backstage/types';
 import { ScmIntegrations } from '@backstage/integration';
 import { TemplateAction } from '@backstage/plugin-scaffolder-backend';
 import { UrlReader } from '@backstage/backend-common';
@@ -15,5 +16,12 @@ export function createFetchCookiecutterAction(options: {
   reader: UrlReader;
   integrations: ScmIntegrations;
   containerRunner: ContainerRunner;
-}): TemplateAction<any>;
+}): TemplateAction<{
+  url: string;
+  targetPath?: string | undefined;
+  values: JsonObject;
+  copyWithoutRender?: string[] | undefined;
+  extensions?: string[] | undefined;
+  imageName?: string | undefined;
+}>;
 ```
diff --git a/plugins/scaffolder-backend-module-rails/api-report.md b/plugins/scaffolder-backend-module-rails/api-report.md
index 9c0610d4f2..aa631c5333 100644
--- a/plugins/scaffolder-backend-module-rails/api-report.md
+++ b/plugins/scaffolder-backend-module-rails/api-report.md
@@ -4,6 +4,7 @@
 
 ```ts
 import { ContainerRunner } from '@backstage/backend-common';
+import { JsonObject } from '@backstage/types';
 import { ScmIntegrations } from '@backstage/integration';
 import { TemplateAction } from '@backstage/plugin-scaffolder-backend';
 import { UrlReader } from '@backstage/backend-common';
@@ -13,5 +14,10 @@ export function createFetchRailsAction(options: {
   reader: UrlReader;
   integrations: ScmIntegrations;
   containerRunner: ContainerRunner;
-}): TemplateAction<any>;
+}): TemplateAction<{
+  url: string;
+  targetPath?: string | undefined;
+  values: JsonObject;
+  imageName?: string | undefined;
+}>;
 ```
diff --git a/plugins/scaffolder-backend-module-yeoman/api-report.md b/plugins/scaffolder-backend-module-yeoman/api-report.md
index fc18814faa..0f8747e592 100644
--- a/plugins/scaffolder-backend-module-yeoman/api-report.md
+++ b/plugins/scaffolder-backend-module-yeoman/api-report.md
@@ -3,8 +3,13 @@
 > Do not edit this file. It is a report generated by [API Extractor](https://api-extractor.com/).
 
 ```ts
+import { JsonObject } from '@backstage/types';
 import { TemplateAction } from '@backstage/plugin-scaffolder-backend';
 
 // @public
-export function createRunYeomanAction(): TemplateAction<any>;
+export function createRunYeomanAction(): TemplateAction<{
+  namespace: string;
+  args?: string[] | undefined;
+  options?: JsonObject | undefined;
+}>;
 ```
diff --git a/plugins/scaffolder-backend/api-report.md b/plugins/scaffolder-backend/api-report.md
index 5e7b5a428b..19411df800 100644
--- a/plugins/scaffolder-backend/api-report.md
+++ b/plugins/scaffolder-backend/api-report.md
@@ -34,11 +34,10 @@ import { TemplateMetadata } from '@backstage/plugin-scaffolder-common';
 import { UrlReader } from '@backstage/backend-common';
 import { Writable } from 'stream';
 
-// Warning: (ae-forgotten-export) The symbol "InputBase" needs to be exported by the entry point index.d.ts
 // Warning: (ae-missing-release-tag) "ActionContext" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public (undocumented)
-export type ActionContext<Input extends InputBase> = {
+export type ActionContext<Input extends JsonObject> = {
   baseUrl?: string;
   logger: Logger_2;
   logStream: Writable;
@@ -77,7 +76,7 @@ export const createBuiltinActions: (options: {
   containerRunner?: ContainerRunner;
   config: Config;
   additionalTemplateFilters?: Record<string, TemplateFilter>;
-}) => TemplateAction<any>[];
+}) => TemplateAction<JsonObject>[];
 
 // Warning: (ae-missing-release-tag) "createCatalogRegisterAction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
@@ -85,17 +84,33 @@ export const createBuiltinActions: (options: {
 export function createCatalogRegisterAction(options: {
   catalogClient: CatalogApi;
   integrations: ScmIntegrations;
-}): TemplateAction<any>;
+}): TemplateAction<
+  | {
+      catalogInfoUrl: string;
+      optional?: boolean | undefined;
+    }
+  | {
+      repoContentsUrl: string;
+      catalogInfoPath?: string | undefined;
+      optional?: boolean | undefined;
+    }
+>;
 
 // Warning: (ae-missing-release-tag) "createCatalogWriteAction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public (undocumented)
-export function createCatalogWriteAction(): TemplateAction<any>;
+export function createCatalogWriteAction(): TemplateAction<{
+  filePath?: string | undefined;
+  entity: Entity;
+}>;
 
 // Warning: (ae-missing-release-tag) "createDebugLogAction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public
-export function createDebugLogAction(): TemplateAction<any>;
+export function createDebugLogAction(): TemplateAction<{
+  message?: string | undefined;
+  listWorkspace?: boolean | undefined;
+}>;
 
 export { createFetchCookiecutterAction };
 
@@ -105,7 +120,10 @@ export { createFetchCookiecutterAction };
 export function createFetchPlainAction(options: {
   reader: UrlReader;
   integrations: ScmIntegrations;
-}): TemplateAction<any>;
+}): TemplateAction<{
+  url: string;
+  targetPath?: string | undefined;
+}>;
 
 // Warning: (ae-missing-release-tag) "createFetchTemplateAction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
@@ -114,17 +132,32 @@ export function createFetchTemplateAction(options: {
   reader: UrlReader;
   integrations: ScmIntegrations;
   additionalTemplateFilters?: Record<string, TemplateFilter>;
-}): TemplateAction<any>;
+}): TemplateAction<{
+  url: string;
+  targetPath?: string | undefined;
+  values: any;
+  templateFileExtension?: string | boolean | undefined;
+  copyWithoutRender?: string[] | undefined;
+  cookiecutterCompat?: boolean | undefined;
+}>;
 
 // Warning: (ae-missing-release-tag) "createFilesystemDeleteAction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public (undocumented)
-export const createFilesystemDeleteAction: () => TemplateAction<any>;
+export const createFilesystemDeleteAction: () => TemplateAction<{
+  files: string[];
+}>;
 
 // Warning: (ae-missing-release-tag) "createFilesystemRenameAction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public (undocumented)
-export const createFilesystemRenameAction: () => TemplateAction<any>;
+export const createFilesystemRenameAction: () => TemplateAction<{
+  files: Array<{
+    from: string;
+    to: string;
+    overwrite?: boolean;
+  }>;
+}>;
 
 // Warning: (ae-missing-release-tag) "createGithubActionsDispatchAction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
@@ -132,7 +165,17 @@ export const createFilesystemRenameAction: () => TemplateAction<any>;
 export function createGithubActionsDispatchAction(options: {
   integrations: ScmIntegrations;
   githubCredentialsProvider?: GithubCredentialsProvider;
-}): TemplateAction<any>;
+}): TemplateAction<{
+  repoUrl: string;
+  workflowId: string;
+  branchOrTagName: string;
+  workflowInputs?:
+    | {
+        [key: string]: string;
+      }
+    | undefined;
+  token?: string | undefined;
+}>;
 
 // Warning: (ae-missing-release-tag) "createGithubWebhookAction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
@@ -141,7 +184,16 @@ export function createGithubWebhookAction(options: {
   integrations: ScmIntegrationRegistry;
   defaultWebhookSecret?: string;
   githubCredentialsProvider?: GithubCredentialsProvider;
-}): TemplateAction<any>;
+}): TemplateAction<{
+  repoUrl: string;
+  webhookUrl: string;
+  webhookSecret?: string | undefined;
+  events?: string[] | undefined;
+  active?: boolean | undefined;
+  contentType?: 'form' | 'json' | undefined;
+  insecureSsl?: boolean | undefined;
+  token?: string | undefined;
+}>;
 
 // Warning: (ae-missing-release-tag) "createPublishAzureAction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
@@ -149,7 +201,13 @@ export function createGithubWebhookAction(options: {
 export function createPublishAzureAction(options: {
   integrations: ScmIntegrationRegistry;
   config: Config;
-}): TemplateAction<any>;
+}): TemplateAction<{
+  repoUrl: string;
+  description?: string | undefined;
+  defaultBranch?: string | undefined;
+  sourcePath?: string | undefined;
+  token?: string | undefined;
+}>;
 
 // Warning: (ae-missing-release-tag) "createPublishBitbucketAction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
@@ -157,12 +215,22 @@ export function createPublishAzureAction(options: {
 export function createPublishBitbucketAction(options: {
   integrations: ScmIntegrationRegistry;
   config: Config;
-}): TemplateAction<any>;
+}): TemplateAction<{
+  repoUrl: string;
+  description?: string | undefined;
+  defaultBranch?: string | undefined;
+  repoVisibility?: 'private' | 'public' | undefined;
+  sourcePath?: string | undefined;
+  enableLFS?: boolean | undefined;
+  token?: string | undefined;
+}>;
 
 // Warning: (ae-missing-release-tag) "createPublishFileAction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public
-export function createPublishFileAction(): TemplateAction<any>;
+export function createPublishFileAction(): TemplateAction<{
+  path: string;
+}>;
 
 // Warning: (ae-missing-release-tag) "createPublishGithubAction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
@@ -171,7 +239,23 @@ export function createPublishGithubAction(options: {
   integrations: ScmIntegrationRegistry;
   config: Config;
   githubCredentialsProvider?: GithubCredentialsProvider;
-}): TemplateAction<any>;
+}): TemplateAction<{
+  repoUrl: string;
+  description?: string | undefined;
+  access?: string | undefined;
+  defaultBranch?: string | undefined;
+  sourcePath?: string | undefined;
+  requireCodeOwnerReviews?: boolean | undefined;
+  repoVisibility?: 'internal' | 'private' | 'public' | undefined;
+  collaborators?:
+    | {
+        username: string;
+        access: 'pull' | 'push' | 'admin' | 'maintain' | 'triage';
+      }[]
+    | undefined;
+  token?: string | undefined;
+  topics?: string[] | undefined;
+}>;
 
 // Warning: (ae-forgotten-export) The symbol "CreateGithubPullRequestActionOptions" needs to be exported by the entry point index.d.ts
 // Warning: (ae-missing-release-tag) "createPublishGithubPullRequestAction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
@@ -181,7 +265,15 @@ export const createPublishGithubPullRequestAction: ({
   integrations,
   githubCredentialsProvider,
   clientFactory,
-}: CreateGithubPullRequestActionOptions) => TemplateAction<any>;
+}: CreateGithubPullRequestActionOptions) => TemplateAction<{
+  title: string;
+  branchName: string;
+  description: string;
+  repoUrl: string;
+  targetPath?: string | undefined;
+  sourcePath?: string | undefined;
+  token?: string | undefined;
+}>;
 
 // Warning: (ae-missing-release-tag) "createPublishGitlabAction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
@@ -189,14 +281,28 @@ export const createPublishGithubPullRequestAction: ({
 export function createPublishGitlabAction(options: {
   integrations: ScmIntegrationRegistry;
   config: Config;
-}): TemplateAction<any>;
+}): TemplateAction<{
+  repoUrl: string;
+  defaultBranch?: string | undefined;
+  repoVisibility?: 'internal' | 'private' | 'public' | undefined;
+  sourcePath?: string | undefined;
+  token?: string | undefined;
+}>;
 
 // Warning: (ae-missing-release-tag) "createPublishGitlabMergeRequestAction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public (undocumented)
 export const createPublishGitlabMergeRequestAction: (options: {
   integrations: ScmIntegrationRegistry;
-}) => TemplateAction<any>;
+}) => TemplateAction<{
+  projectid: string;
+  repoUrl: string;
+  title: string;
+  description: string;
+  branchName: string;
+  targetPath: string;
+  token?: string | undefined;
+}>;
 
 // Warning: (ae-missing-release-tag) "createRouter" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
@@ -206,13 +312,9 @@ export function createRouter(options: RouterOptions): Promise<express.Router>;
 // Warning: (ae-missing-release-tag) "createTemplateAction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public (undocumented)
-export const createTemplateAction: <
-  Input extends Partial<{
-    [name: string]: JsonValue | Partial<JsonObject> | undefined;
-  }>,
->(
-  templateAction: TemplateAction<Input>,
-) => TemplateAction<any>;
+export const createTemplateAction: <TInput extends JsonObject>(
+  templateAction: TemplateAction<TInput>,
+) => TemplateAction<TInput>;
 
 // @public
 export type CreateWorkerOptions = {
@@ -531,7 +633,7 @@ export class TaskWorker {
 // Warning: (ae-missing-release-tag) "TemplateAction" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public (undocumented)
-export type TemplateAction<Input extends InputBase> = {
+export type TemplateAction<Input extends JsonObject> = {
   id: string;
   description?: string;
   schema?: {
@@ -546,13 +648,11 @@ export type TemplateAction<Input extends InputBase> = {
 // @public (undocumented)
 export class TemplateActionRegistry {
   // (undocumented)
-  get(actionId: string): TemplateAction<any>;
+  get(actionId: string): TemplateAction<JsonObject>;
   // (undocumented)
-  list(): TemplateAction<any>[];
+  list(): TemplateAction<JsonObject>[];
   // (undocumented)
-  register<Parameters extends InputBase>(
-    action: TemplateAction<Parameters>,
-  ): void;
+  register<TInput extends JsonObject>(action: TemplateAction<TInput>): void;
 }
 
 // Warning: (ae-missing-release-tag) "TemplateFilter" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/TemplateActionRegistry.ts b/plugins/scaffolder-backend/src/scaffolder/actions/TemplateActionRegistry.ts
index cd31db49eb..e546d5bf9a 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/TemplateActionRegistry.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/TemplateActionRegistry.ts
@@ -14,13 +14,14 @@
  * limitations under the License.
  */
 
-import { InputBase, TemplateAction } from './types';
+import { JsonObject } from '@backstage/types';
 import { ConflictError, NotFoundError } from '@backstage/errors';
+import { TemplateAction } from './types';
 
 export class TemplateActionRegistry {
   private readonly actions = new Map<string, TemplateAction<any>>();
 
-  register<Parameters extends InputBase>(action: TemplateAction<Parameters>) {
+  register<TInput extends JsonObject>(action: TemplateAction<TInput>) {
     if (this.actions.has(action.id)) {
       throw new ConflictError(
         `Template action with ID '${action.id}' has already been registered`,
@@ -29,7 +30,7 @@ export class TemplateActionRegistry {
     this.actions.set(action.id, action);
   }
 
-  get(actionId: string): TemplateAction<any> {
+  get(actionId: string): TemplateAction<JsonObject> {
     const action = this.actions.get(actionId);
     if (!action) {
       throw new NotFoundError(
@@ -39,7 +40,7 @@ export class TemplateActionRegistry {
     return action;
   }
 
-  list(): TemplateAction<any>[] {
+  list(): TemplateAction<JsonObject>[] {
     return [...this.actions.values()];
   }
 }
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/createBuiltinActions.ts b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/createBuiltinActions.ts
index 481ab894ec..9df2b7146e 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/createBuiltinActions.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/createBuiltinActions.ts
@@ -15,6 +15,7 @@
  */
 
 import { ContainerRunner, UrlReader } from '@backstage/backend-common';
+import { JsonObject } from '@backstage/types';
 import { CatalogApi } from '@backstage/catalog-client';
 import {
   GithubCredentialsProvider,
@@ -47,6 +48,7 @@ import {
   createGithubWebhookAction,
 } from './github';
 import { TemplateFilter } from '../../../lib';
+import { TemplateAction } from '../types';
 
 export const createBuiltinActions = (options: {
   reader: UrlReader;
@@ -55,7 +57,7 @@ export const createBuiltinActions = (options: {
   containerRunner?: ContainerRunner;
   config: Config;
   additionalTemplateFilters?: Record<string, TemplateFilter>;
-}) => {
+}): TemplateAction<JsonObject>[] => {
   const {
     reader,
     integrations,
@@ -126,5 +128,5 @@ export const createBuiltinActions = (options: {
     );
   }
 
-  return actions;
+  return actions as TemplateAction<JsonObject>[];
 };
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/debug/log.test.ts b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/debug/log.test.ts
index 38c50afecc..ecd0f33e21 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/debug/log.test.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/debug/log.test.ts
@@ -61,7 +61,7 @@ describe('debug:log', () => {
     const context = {
       ...mockContext,
       input: {
-        listWorkspace: 'true',
+        listWorkspace: true,
       },
     };
 
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/fetch/template.test.ts b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/fetch/template.test.ts
index 6ee8f8ce01..2f9bfd3796 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/fetch/template.test.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/fetch/template.test.ts
@@ -27,12 +27,18 @@ import { ScmIntegrations } from '@backstage/integration';
 import { PassThrough } from 'stream';
 import { fetchContents } from './helpers';
 import { ActionContext, TemplateAction } from '../../types';
-import { createFetchTemplateAction, FetchTemplateInput } from './template';
+import { createFetchTemplateAction } from './template';
 
 jest.mock('./helpers', () => ({
   fetchContents: jest.fn(),
 }));
 
+type FetchTemplateInput = ReturnType<
+  typeof createFetchTemplateAction
+> extends TemplateAction<infer U>
+  ? U
+  : never;
+
 const realFiles = Object.fromEntries(
   [
     resolvePackagePath(
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/fetch/template.ts b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/fetch/template.ts
index 32a3a84070..08dfc46caf 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/fetch/template.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/fetch/template.ts
@@ -28,22 +28,6 @@ import {
   SecureTemplater,
 } from '../../../../lib/templating/SecureTemplater';
 
-type CookieCompatInput = {
-  copyWithoutRender?: string[];
-  cookiecutterCompat?: boolean;
-};
-
-type ExtensionInput = {
-  templateFileExtension?: string | boolean;
-};
-
-export type FetchTemplateInput = {
-  url: string;
-  targetPath?: string;
-  values: any;
-} & CookieCompatInput &
-  ExtensionInput;
-
 export function createFetchTemplateAction(options: {
   reader: UrlReader;
   integrations: ScmIntegrations;
@@ -51,7 +35,16 @@ export function createFetchTemplateAction(options: {
 }) {
   const { reader, integrations, additionalTemplateFilters } = options;
 
-  return createTemplateAction<FetchTemplateInput>({
+  return createTemplateAction<{
+    url: string;
+    targetPath?: string;
+    values: any;
+    templateFileExtension?: string | boolean;
+
+    // Cookiecutter compat options
+    copyWithoutRender?: string[];
+    cookiecutterCompat?: boolean;
+  }>({
     id: 'fetch:template',
     description:
       "Downloads a skeleton, templates variables into file and directory names and content, and places the result in the workspace, or optionally in a subdirectory specified by the 'targetPath' input option.",
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/filesystem/delete.test.ts b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/filesystem/delete.test.ts
index ba8a145721..713de5b0ad 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/filesystem/delete.test.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/filesystem/delete.test.ts
@@ -61,28 +61,28 @@ describe('fs:delete', () => {
     await expect(
       action.handler({
         ...mockContext,
-        input: { files: undefined },
+        input: { files: undefined } as any,
       }),
     ).rejects.toThrow(/files must be an Array/);
 
     await expect(
       action.handler({
         ...mockContext,
-        input: { files: {} },
+        input: { files: {} } as any,
       }),
     ).rejects.toThrow(/files must be an Array/);
 
     await expect(
       action.handler({
         ...mockContext,
-        input: { files: '' },
+        input: { files: '' } as any,
       }),
     ).rejects.toThrow(/files must be an Array/);
 
     await expect(
       action.handler({
         ...mockContext,
-        input: { files: null },
+        input: { files: null } as any,
       }),
     ).rejects.toThrow(/files must be an Array/);
   });
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/filesystem/rename.test.ts b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/filesystem/rename.test.ts
index 8452735083..b12e4269c2 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/filesystem/rename.test.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/filesystem/rename.test.ts
@@ -76,28 +76,28 @@ describe('fs:rename', () => {
     await expect(
       action.handler({
         ...mockContext,
-        input: { files: undefined },
+        input: { files: undefined } as any,
       }),
     ).rejects.toThrow(/files must be an Array/);
 
     await expect(
       action.handler({
         ...mockContext,
-        input: { files: {} },
+        input: { files: {} } as any,
       }),
     ).rejects.toThrow(/files must be an Array/);
 
     await expect(
       action.handler({
         ...mockContext,
-        input: { files: '' },
+        input: { files: '' } as any,
       }),
     ).rejects.toThrow(/files must be an Array/);
 
     await expect(
       action.handler({
         ...mockContext,
-        input: { files: null },
+        input: { files: null } as any,
       }),
     ).rejects.toThrow(/files must be an Array/);
   });
@@ -106,21 +106,21 @@ describe('fs:rename', () => {
     await expect(
       action.handler({
         ...mockContext,
-        input: { files: ['old.md'] },
+        input: { files: ['old.md'] } as any,
       }),
     ).rejects.toThrow(/each file must have a from and to property/);
 
     await expect(
       action.handler({
         ...mockContext,
-        input: { files: [{ from: 'old.md' }] },
+        input: { files: [{ from: 'old.md' }] } as any,
       }),
     ).rejects.toThrow(/each file must have a from and to property/);
 
     await expect(
       action.handler({
         ...mockContext,
-        input: { files: [{ to: 'new.md' }] },
+        input: { files: [{ to: 'new.md' }] } as any,
       }),
     ).rejects.toThrow(/each file must have a from and to property/);
   });
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/filesystem/rename.ts b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/filesystem/rename.ts
index 4bdba96750..c3e128cec5 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/filesystem/rename.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/filesystem/rename.ts
@@ -17,16 +17,16 @@ import { createTemplateAction } from '../../createTemplateAction';
 import { resolveSafeChildPath } from '@backstage/backend-common';
 
 import { InputError } from '@backstage/errors';
-import { JsonObject } from '@backstage/types';
 import fs from 'fs-extra';
 
-interface FilesToRename extends JsonObject {
-  from: string;
-  to: string;
-}
-
 export const createFilesystemRenameAction = () => {
-  return createTemplateAction<{ files: FilesToRename }>({
+  return createTemplateAction<{
+    files: Array<{
+      from: string;
+      to: string;
+      overwrite?: boolean;
+    }>;
+  }>({
     id: 'fs:rename',
     description: 'Renames files and directories within the workspace',
     schema: {
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/github/githubWebhook.ts b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/github/githubWebhook.ts
index 660c7793f2..0c93ae1dd5 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/github/githubWebhook.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/github/githubWebhook.ts
@@ -23,8 +23,6 @@ import { OctokitProvider } from './OctokitProvider';
 import { emitterEventNames } from '@octokit/webhooks';
 import { assertError } from '@backstage/errors';
 
-type ContentType = 'form' | 'json';
-
 export function createGithubWebhookAction(options: {
   integrations: ScmIntegrationRegistry;
   defaultWebhookSecret?: string;
@@ -45,7 +43,7 @@ export function createGithubWebhookAction(options: {
     webhookSecret?: string;
     events?: string[];
     active?: boolean;
-    contentType?: ContentType;
+    contentType?: 'form' | 'json';
     insecureSsl?: boolean;
     token?: string;
   }>({
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/bitbucket.test.ts b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/bitbucket.test.ts
index 3d14710f3e..5493219d57 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/bitbucket.test.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/bitbucket.test.ts
@@ -51,7 +51,7 @@ describe('publish:bitbucket', () => {
   const mockContext = {
     input: {
       repoUrl: 'bitbucket.org?workspace=workspace&project=project&repo=repo',
-      repoVisibility: 'private',
+      repoVisibility: 'private' as const,
     },
     workspacePath: 'lol',
     logger: getVoidLogger(),
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/bitbucket.ts b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/bitbucket.ts
index 8ba8592642..47ebce0550 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/bitbucket.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/bitbucket.ts
@@ -29,7 +29,7 @@ const createBitbucketCloudRepository = async (opts: {
   workspace: string;
   project: string;
   repo: string;
-  description: string;
+  description?: string;
   repoVisibility: 'private' | 'public';
   authorization: string;
 }) => {
@@ -91,7 +91,7 @@ const createBitbucketServerRepository = async (opts: {
   host: string;
   project: string;
   repo: string;
-  description: string;
+  description?: string;
   repoVisibility: 'private' | 'public';
   authorization: string;
   apiBaseUrl?: string;
@@ -200,11 +200,11 @@ export function createPublishBitbucketAction(options: {
 
   return createTemplateAction<{
     repoUrl: string;
-    description: string;
+    description?: string;
     defaultBranch?: string;
-    repoVisibility: 'private' | 'public';
+    repoVisibility?: 'private' | 'public';
     sourcePath?: string;
-    enableLFS: boolean;
+    enableLFS?: boolean;
     token?: string;
   }>({
     id: 'publish:bitbucket',
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/github.test.ts b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/github.test.ts
index 5467ca651c..1e58635bbe 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/github.test.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/github.test.ts
@@ -52,7 +52,7 @@ describe('publish:github', () => {
     input: {
       repoUrl: 'github.com?repo=repo&owner=owner',
       description: 'description',
-      repoVisibility: 'private',
+      repoVisibility: 'private' as const,
       access: 'owner/blam',
     },
     workspacePath: 'lol',
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/github.ts b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/github.ts
index 139fad04d4..cabe40986f 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/github.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/github.ts
@@ -28,9 +28,6 @@ import { Config } from '@backstage/config';
 import { OctokitProvider } from '../github/OctokitProvider';
 import { assertError } from '@backstage/errors';
 
-type Permission = 'pull' | 'push' | 'admin' | 'maintain' | 'triage';
-type Collaborator = { access: Permission; username: string };
-
 export function createPublishGithubAction(options: {
   integrations: ScmIntegrationRegistry;
   config: Config;
@@ -50,8 +47,11 @@ export function createPublishGithubAction(options: {
     defaultBranch?: string;
     sourcePath?: string;
     requireCodeOwnerReviews?: boolean;
-    repoVisibility: 'private' | 'internal' | 'public';
-    collaborators: Collaborator[];
+    repoVisibility?: 'private' | 'internal' | 'public';
+    collaborators?: Array<{
+      username: string;
+      access: 'pull' | 'push' | 'admin' | 'maintain' | 'triage';
+    }>;
     token?: string;
     topics?: string[];
   }>({
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/githubPullRequest.test.ts b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/githubPullRequest.test.ts
index 20ea4b03da..64d3bc41de 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/githubPullRequest.test.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/githubPullRequest.test.ts
@@ -28,13 +28,18 @@ import { ActionContext, TemplateAction } from '../../types';
 import {
   ClientFactoryInput,
   createPublishGithubPullRequestAction,
-  GithubPullRequestActionInput,
   PullRequestCreator,
 } from './githubPullRequest';
 
 const root = os.platform() === 'win32' ? 'C:\\root' : '/root';
 const workspacePath = resolvePath(root, 'my-workspace');
 
+type GithubPullRequestActionInput = ReturnType<
+  typeof createPublishGithubPullRequestAction
+> extends TemplateAction<infer U>
+  ? U
+  : never;
+
 describe('createPublishGithubPullRequestAction', () => {
   let instance: TemplateAction<GithubPullRequestActionInput>;
   let fakeClient: PullRequestCreator;
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/githubPullRequest.ts b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/githubPullRequest.ts
index 80333c4966..c329b6b6f3 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/githubPullRequest.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/githubPullRequest.ts
@@ -48,16 +48,6 @@ export type PullRequestCreatorConstructor = (
   octokit: Octokit,
 ) => PullRequestCreator;
 
-export type GithubPullRequestActionInput = {
-  title: string;
-  branchName: string;
-  description: string;
-  repoUrl: string;
-  targetPath?: string;
-  sourcePath?: string;
-  token?: string;
-};
-
 export type ClientFactoryInput = {
   integrations: ScmIntegrationRegistry;
   githubCredentialsProvider?: GithubCredentialsProvider;
@@ -122,7 +112,15 @@ export const createPublishGithubPullRequestAction = ({
   githubCredentialsProvider,
   clientFactory = defaultClientFactory,
 }: CreateGithubPullRequestActionOptions) => {
-  return createTemplateAction<GithubPullRequestActionInput>({
+  return createTemplateAction<{
+    title: string;
+    branchName: string;
+    description: string;
+    repoUrl: string;
+    targetPath?: string;
+    sourcePath?: string;
+    token?: string;
+  }>({
     id: 'publish:github:pull-request',
     schema: {
       input: {
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/gitlab.test.ts b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/gitlab.test.ts
index a32fea8830..db4ad5a019 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/gitlab.test.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/gitlab.test.ts
@@ -45,7 +45,7 @@ describe('publish:gitlab', () => {
   const mockContext = {
     input: {
       repoUrl: 'gitlab.com?repo=repo&owner=owner',
-      repoVisibility: 'private',
+      repoVisibility: 'private' as const,
     },
     workspacePath: 'lol',
     logger: getVoidLogger(),
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/gitlab.ts b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/gitlab.ts
index 48979306b1..a3c1919b63 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/gitlab.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/gitlab.ts
@@ -31,7 +31,7 @@ export function createPublishGitlabAction(options: {
   return createTemplateAction<{
     repoUrl: string;
     defaultBranch?: string;
-    repoVisibility: 'private' | 'internal' | 'public';
+    repoVisibility?: 'private' | 'internal' | 'public';
     sourcePath?: string;
     token?: string;
   }>({
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/gitlabMergeRequest.ts b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/gitlabMergeRequest.ts
index bf687268c3..e04eb5cdb5 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/gitlabMergeRequest.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/gitlabMergeRequest.ts
@@ -24,22 +24,20 @@ import { InputError } from '@backstage/errors';
 import { parseRepoUrl } from './util';
 import { resolveSafeChildPath } from '@backstage/backend-common';
 
-export type GitlabMergeRequestActionInput = {
-  projectid: string;
-  repoUrl: string;
-  title: string;
-  description: string;
-  branchName: string;
-  targetPath: string;
-  token?: string;
-};
-
 export const createPublishGitlabMergeRequestAction = (options: {
   integrations: ScmIntegrationRegistry;
 }) => {
   const { integrations } = options;
 
-  return createTemplateAction<GitlabMergeRequestActionInput>({
+  return createTemplateAction<{
+    projectid: string;
+    repoUrl: string;
+    title: string;
+    description: string;
+    branchName: string;
+    targetPath: string;
+    token?: string;
+  }>({
     id: 'publish:gitlab:merge-request',
     schema: {
       input: {
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/createTemplateAction.ts b/plugins/scaffolder-backend/src/scaffolder/actions/createTemplateAction.ts
index a741900f9d..243f39e070 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/createTemplateAction.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/createTemplateAction.ts
@@ -14,11 +14,12 @@
  * limitations under the License.
  */
 
-import { InputBase, TemplateAction } from './types';
+import { JsonObject } from '@backstage/types';
+import { TemplateAction } from './types';
 
-export const createTemplateAction = <Input extends InputBase>(
-  templateAction: TemplateAction<Input>,
-): TemplateAction<any> => {
+export const createTemplateAction = <TInput extends JsonObject>(
+  templateAction: TemplateAction<TInput>,
+): TemplateAction<TInput> => {
   // TODO(blam): Can add some more validation here to validate the action later on
   return templateAction;
 };
diff --git a/plugins/scaffolder-backend/src/scaffolder/actions/types.ts b/plugins/scaffolder-backend/src/scaffolder/actions/types.ts
index 4b842e8c5c..f1e5dd7b77 100644
--- a/plugins/scaffolder-backend/src/scaffolder/actions/types.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/actions/types.ts
@@ -20,11 +20,7 @@ import { JsonValue, JsonObject } from '@backstage/types';
 import { Schema } from 'jsonschema';
 import { TaskSecrets, TemplateMetadata } from '../tasks/types';
 
-type PartialJsonObject = Partial<JsonObject>;
-type PartialJsonValue = PartialJsonObject | JsonValue | undefined;
-export type InputBase = Partial<{ [name: string]: PartialJsonValue }>;
-
-export type ActionContext<Input extends InputBase> = {
+export type ActionContext<Input extends JsonObject> = {
   /**
    * Base URL for the location of the task spec, typically the url of the source entity file.
    */
@@ -51,7 +47,7 @@ export type ActionContext<Input extends InputBase> = {
   metadata?: TemplateMetadata;
 };
 
-export type TemplateAction<Input extends InputBase> = {
+export type TemplateAction<Input extends JsonObject> = {
   id: string;
   description?: string;
   schema?: {